The process of developing food system policies (FSP) that comprehensively address systemic issues requires the inclusion of a diverse array of actors from all parts of the food system. Drawing on literature on collaborative governance, we argue that interpersonal relationships, and the factors that facilitate their development and maintenance, are essential to FSP development. Based on this assertion, we ask: how do interpersonal relationships shape collaborative food systems policy processes? Specifically, we explore: (1) what motivates the emergence of interpersonal relationships in FSP; (2) what are the characteristics of social environments that foster such interpersonal relationships; and (3) what traits/activities foster interpersonal relationships in food systems policy processes.This research draws on qualitative analysis of 26 semi-structured interviews in four preeminent examples of FSP development in the United States identified by Growing Food Connections (GFC), an FSP research group: Seattle, WA; Lawrence/Douglas County, KS; a five-county region in Minnesota; and Marquette County, MI. Following an inductive description of key cross-case themes responding to the previous questions, we discuss the implications of these findings for equity and ethics in FSP development. This discussion highlights that, while equity did not appear as an explicit motivation for developing interpersonal relationships, practices of humble listening by policy practitioners foster inclusive engagement as a basis for equitable collaboration.